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PATENTED JAN.12', 1904.

D. MoL. STOREY. GONGBNTRATOR APPLICATION FILED AUG. a 1902.

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PATENTED JAN. 12, 1904'.

D. MoL. STOREY.

OONGENTRATOR.

APPLICATION PILED we. a, 1902.

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UNITED STATES PATE T OFFICE.

DANIEL MoLANE STOREY, OF WEEPING WATER, NEBRASKA.

CONCENTRATOR- SPECIFICATION forming part of Letters Patent No. 749,706, dated January 12, 1904.

Application filed August 8, 1902.

To all whom it may concern:

Be it known that I, DANIEL MGLANE STOREY, a citizen of the United States, and a resident of Weeping Water, in the county of Cass and State of Nebraska, have invented a new and Improved Concentrator, of which the following is a full, clear, and exact description.

The invention relates to concentrators such as shown and described in the application for Letters Patent of the United States, Serial No. 113,284, filed by me June 26, 1902.

The object of the present invention is to provide a new and improved concentrator which is simple and durable in construction and designed for treating materials from stamp-mills or from placers to effectively separate the precious metal from the tailings.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters'of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the improvement. Fig. 2 is a longitudinal sectional elevation of the same on the line 2 2 of Fig. 1. Fig. 3 is a transverse section of the same on the line 3 3 of Fig. 2. Fig. tis an enlarged sectional side elevation of the adjustable connection for varying the stroke of the concentrating-box, and Fig. 5 is a sectional plan view of the same.

The ore-concentrator is mounted on a suitably-constructed base or frame A, on the side of which are pivoted upwardly extending arms B, supporting a concentrating-box C, connected at its forward end by a link D with a slide D, held adjustable in a rock-arm D provided with trunnions D journaled in suitable bearings carried on the frame A. A setscrew D serves to fasten the slide D in place in the rock-arm D after the desired adjustment is made-that is, after the desired throw is given to the concentrating-box C.

The rock-arm D is provided on its upper end with lugs D pivotally connected by a pitman E with the crank-arm F of a main shaft F, extending transversely and journaled Serial No. 118,931- (No model.)

in suitable bearings on the main frame or base A. The main shaft F carries the usual flywheelF connected by 'a belt with other suitable machinery for imparting a rotary motion to the shaft F, so that the latter by the crank F, pitman E, rock-arm D and link D imparts a forward-and-backward rocking motion to the concentrating-box C, supported on the swinging arms B. Now by moving the slide D farther up or farther down in the rock-arm D more or less throw can be given to the concentrating-box C without varying the crankarm F of the main shaft F. It is understood that this adjustment is essential for treating materials of different specific gravity.

The concentrating-box C is provided at its forward end with a receiving-chute C, which delivers the material to be treated to a V- shaped rifle C extending transversely in the box at the forward end thereof, and in the box are arranged other rifles C C and C located one alongside the other and similar to the rifle C adjacent to the rifle C The rearmost rifle C discharges into a chute C for carrying off the tailings. The first two rifles C and C are provided with valved outlets G, and similar outlets Gr lead from the bottoms of the rifles C C The valved outlets G and G are connected by hose or pipes G G with transverse conveyers H H, respectively, arranged on the base or frame A and discharging at opposite sides into elevators I I for delivering the concentrates to chutes J J, discharging into settling-tanks K K, located on opposite sides of the machine, as plainly illustrated in the drawings. The settling-tanks K K receive the water and concentrates from the rifles C C and 0* C of the concentrating-box C by means of the connections above described. By having the connection between the rifles and elevators in the manner set forth it is evident that the water-level in the elevators corresponds with that in the rifles, and consequently a suction action on the part of the conveyers and elevators relative to the rifles does not take place, and consequently tailings are not drawn down in the rifles and passed to the settling-tanks. By the construction described it requires but little power to move'the water and concen- Patented January 12, 1904.

trates to the settling-tanks. I do not limit myself to the number of rifles in the concentrating-box, as more or less rifles may be em-.

ployed, according to the nature of the material to be treated.

In dry placer-work or dry work of any kind the conveyers and elevators may be dispensed with, and the concentrates are then directly dropped into a box below the rifles.

In order to actuate the conveyers H and H, I provide an endless sprocket-chain L, passing over sprocket-wheels L U, secured on the shafts of the conveyers H H, the said sprocket-chain also passing over a sprocketwheel N, secured on a shaft N, journaled on the base A and carrying a sprocket-wheel N connected by a sprocket-chain N with. a sprocket-wheel N on the main shaft F. Thus when the latter is rotated the rotary motion is transmitted by the sprocket-wheels and chains described to the shafts of the conveyers H and H to cause the latter to convey the concentrates sidewise to the elevators I and I. The latter are also actuated from the chain L, and for this purpose the latter passes over sprocket-wheels O O, secured on transverse shafts 0 O journaled in suitable bearings in the base A, and the said shafts O O are connected by gearings P P (see Fig. 3) with-the shafts of the elevators I I. Thus the traveling motion of the chain L causes rotation of the shafts 0 0 which by the gearings P P actuates the elevators I I to move the concentrates delivered by the conveyers H H to the chutes J J, which in turn discharge the concentrates into the settling-tanks K K. The sprocket-chain L also passes over idlers Q, Q, carried by the base A, to hold the sprocketchain in proper position relative to the sprocket-wheels L, O, and O.

The operation is as follows: When the shaft F is rotated, a forward-and-backward swinging motion without undue jar is given to the concentrating-box C, and as the material is fed over the chute C and passes into the rifle C it is evident that the material is agitated I by the forward-and-backward rocking motion,

so that the heavier particles readily settle in the apex of the first rifle C Lighter particles pass over the rifle C to the next rifle C in which some of the heavier particles settle, while the lighter particles pass on to the next rifle (3*, in which again some of the heavier particles settle and the lighter pass to the riffle C in which any remaining heavy particles settle, while the tailings finally pass over the chute C to the rear end of the machine. The concentrates settling in the several rifles C C and C C can be discharged from time to time by the operator opening the valves G and G, and the concentrates thus flowing from the rifles to the conveyers H H are moved l YIQ13Lby the latter and finally disa 22 s elevators I and I, which eleweitrates to the chutes J and J,

.and-backward rocking motion given to the box C in a longitudinal direction-that is, at right angles to the direction of the rifles the material is sufliciently agitated to cause a proper separation between the heavier particles and the tailings, so that the heavier particles settle in the apex bottoms of the rifles, while the tailings move on and are finally discharged over the chute C to the outside of the machine.

Having thu s described my invention, I claim as new and desire to secure by Letters Patent 1. A concentrator, comprising a box having a rocking motion and provided with transversely-extended V-shaped rifles, means for operating the box, settling-tanks arranged at the sides of the box and adapted to be filled with water to the level of the water in the box, a conveyer for conveying the concentrates from the bottoms of the forward rifles to one of the settling-tanks, a conveyer for conveying the concentrates from the bottoms of the rear rifles to the other settling-tank, and means for operating the conveyers from the box-operating means, as set forth.

2. A concentrator, comprising a pivotallymounted box, rifles extending in the said box in a direction at right angles to the running motion of the box, the rifles being V-shaped, means for imparting a swinging movement to said box, transverse conveyers arranged below the box, flexible connections between the conveyers and the apex bottoms of the rifles, elevators connected with the outer ends of said conveyers, settling-tanks at opposite sides of the box and into which discharge the said elevators, and means for operating the conveyers and elevators from the box-operating means, as set forth.

3. A concentrator, comprising a box having a rocking motion, rifles extending in the said box in a direction at right angles to the running motion of the box, the rifles being V- shaped, transverse conveyers arranged below the box, flexible connections between the conveyers and the apex bottoms of the rifles, elevators connected with the outer ends of said conveyers, settling-tanks at opposite sides of the box and into which discharge the said elevators, a main shaft, and means for imparting motion to the box, conveyers and elevators from the said main shaft, asset forth.

4:. In a concentrator, the combination with a swinging concentrating-box provided with rifles, and means for swinging said box, of

conveyers arranged below the bottom of the box and provided with sprocket-wheels on their shafts, flexible connections between the bottom of the box and the conveyers, an endless sprocket-chain passing over the sprocketwheels of the conveyers, means for operating the sprocket-chain, elevators into which discharge the conveyers, and means for operating the elevators from the endless chain, as set forth.

5. In a concentrator, the combination with a swinging concentrating-box provided with riffles, and means for swinging said box, of conveyers provided with sprocket-wheels on their shafts, flexible connections between the box and conveyers, an endless sprocket-chain passing over the sprocket-wheels of the conveyers,means for operating the sprocket-chain from the box-operating means, elevators into which the conveyers discharge, shafts provided with sprocket-wheels over which passes the sprocket-chain,elevators,'and gearing between the elevator-shafts and the shafts carrying the sprocket-Wheels, as set forth.

6. A concentrator, comprisinga box mounted upon swinging supports and provided with V- shaped rifiies extending transversely of the box, means for swinging said box, conveyers arranged transversely below the box, flexible connections connecting each conveyer with the apex bottoms of the rifiies, one at the forward end of the box and the other at the rear end,

elevators into which the conveyers discharge, a tank at each side of the box and into which the elevators discharge, and means for operating the conveyers and elevators from the box-operating means, as set forth.

7 A concentrator, comprising a box mounted on swinging supports, and provided with V-shaped riffies extending transversely of the box, means for swinging the box, said means including an adjusting device for regulating the throw of the box, conveyers arranged transversely below the box, flexible connections connecting each conveyer with the apex bottoms of two of the riflies, elevators at the outer ends of the conveyers and into which said conveyers discharge, a settling-tank at each side of the box and into which the elevators discharge, and means for operating the conveyers and elevators from the box-operating means, as set forth. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DANIEL MGLANE STOREY.

Witnesses:

THOMAS (J. KUNKEL, CHARLES A. BALDWIN. 

